PPP v2.3.11
RP-PPPOE v3.12
Linux 2.6.35
I am seeing some issues with respect to how PPP is handling a PPPoE connection.
My PPPoE connection gets established and pppd reports UP via the ip-up script.
Then at some point (sometimes within a second, sometimes hours) pppd reports down
via the ip-down script, but does not exit then re-establishes the UP state and
reports it via ip-up.
I have a script that monitors by this by having a modified ip-up and ip-down
script write a value to a specific file under /var/run/pppd/ and if it is
ip-down, then I schedule a restart of pppd to occur once the pppd image exits. I
have assumed that ip-down being triggered is and indication that PPPoE connection
is down and over.
But I am now seeing that this assumption could be incorrect. I don't claim to
understand the entire protocol layers involved. But is it supported that a PPPoE
connection can shift back from the IPCP layer to the LCP layer? Then back?
Or is this a ppp protocol issue. I see in the pppd code that we can moved to a
down state if we get a request to restart negotiations, so I can see that my
assumption may be incorrect.
Any help is appreciated.
Thanks,
Patrick
